* ref: Remove precall test.
* ref: Remove callstats.
* Remove the dependency on react-native-callstats.

Stores the Logger.LogCollector instance in base/logging state instead of
global APP variable and enables it on mobile.

The functionality around logging including logging_config.js i.e.
loggingConfig and the other classes and/or functions that initialize
loggers for Jits Meet truly deserves a feature of its own. Start getting
in that direction on both Web and mobile by introducing
features/base/logging and bringing loggingConfig to mobile.